kbuild: generate a list of objects in vmlinux

A *.mod file lists the member objects of a module, but vmlinux does
not have such a file.

Generate this list to allow modpost to know all the member objects.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
Tested-by: Nathan Chancellor <nathan@kernel.org>

Author: masahir0y

scripts/link-vmlinux.sh

@@ -311,6 +311,7 @@ cleanup()
 	rm -f vmlinux.map
 	rm -f vmlinux.o
 	rm -f .vmlinux.d
+	rm -f .vmlinux.objs
 }
 
 # Use "make V=1" to debug this script
@@ -342,6 +343,16 @@ ${MAKE} -f "${srctree}/scripts/Makefile.build" obj=init need-builtin=1
 modpost_link vmlinux.o
 objtool_link vmlinux.o
 
+# Generate the list of objects in vmlinux
+for f in ${KBUILD_VMLINUX_OBJS} ${KBUILD_VMLINUX_LIBS}; do
+	case ${f} in
+	*.a)
+		${AR} t ${f} ;;
+	*)
+		echo ${f} ;;
+	esac
+done > .vmlinux.objs
+
 # modpost vmlinux.o to check for section mismatches
 ${MAKE} -f "${srctree}/scripts/Makefile.modpost" MODPOST_VMLINUX=1